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port-xen/45956: Network packet corruption on MP kernel

>Number:         45956
>Category:       port-xen
>Synopsis:       ssh disconnects with corrupt packet with MP kernel
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-xen-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 09 04:45:00 +0000 2012
>Originator:     Jeff Rizzo <>
>Release:        NetBSD 5.99.64
System: NetBSD 5.99.64 NetBSD 
5.99.64 (XEN3PAE_DOMU) #2: Tue Feb  7 20:13:15 PST 2012  
riz@wintermute:/space/build/obj.i386/sys/arch/i386/compile/XEN3PAE_DOMU i386
Architecture: i386
Machine: i386
        With an MP kernel on a domU (I've seen it on both amd64 and i386 PAE),
        terminal output (such as a will sometimes disconnect with
        the following message:

        Corrupted MAC on input.
        Disconnecting: Packet corrupt 

        I haven't seen this on anything but MP xen (that I'm aware of).
        Run a fast build with lots of output on a -current xen domU.
        None given.


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